Holbert race car Oil analysis report from Blackstone.
06-04-2008, 10:42 PM
#46
Three Wheelin'
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Dennis
FWIW... If you do the egg beater test, consider that you'll need a very fast egg beater
Also, considering the temps involved, a fire suit like the fire folks wear might not be a bad idea too. A friend with a fire extinguisher is another handy idea
FWIW... If you do the egg beater test, consider that you'll need a very fast egg beater
Also, considering the temps involved, a fire suit like the fire folks wear might not be a bad idea too. A friend with a fire extinguisher is another handy idea
06-04-2008, 10:46 PM
#47
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I hope you mean, the holbert engine. (i wouldnt take the chance with the new engine, even though the builders had Mobil 1 stickers all over the box 
)
Gee, i dont know if i could do it again.(see that low oil pressure) It would be an interesting test, and there are reports that the Mobil 1 now is a different animal than it was 5 years ago.
It has been a pretty impressive car.
Mk
)Gee, i dont know if i could do it again.(see that low oil pressure) It would be an interesting test, and there are reports that the Mobil 1 now is a different animal than it was 5 years ago.
It has been a pretty impressive car.
Mk
06-04-2008, 10:57 PM
#48
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so, Chris' car had near 300 track hours at 60mph average speed, so near 18,000 track miles, in addition to the 20 or so DEs that he had prior to you buying it? how many miles did it have on the odometer when you bought it?
It sure is right up there, but i think racing days where you are running all out during the sessions, is a little tougher than DEs, but ive seen your video, so i know you are not holding back too much!
in any event, both cars have an amazing record. dont forget about my '84! it had near 60 DE/race days too and 170,000 miles! that engine looked brand new when pulled apart! (except for those nasty headgaskets)
Mk
It sure is right up there, but i think racing days where you are running all out during the sessions, is a little tougher than DEs, but ive seen your video, so i know you are not holding back too much!
in any event, both cars have an amazing record. dont forget about my '84! it had near 60 DE/race days too and 170,000 miles! that engine looked brand new when pulled apart! (except for those nasty headgaskets)
Mk
My firssessions w/ the intermediate guys. The prior owner did probably 20-30 DE days and One Lap of America. One could argue the motor had double to triple the amount t motor did live a long life. I did 70 DE days with it. Each day was 2-1/2 to 3 hours of track time. I purposely chose DE organizations that maximized track time with either 2 run groups or days where I could run extra of track hours that yours currently has. So maybe the Holbert motor is only halfway through its life?
Re: handling - I love driving w/ the tail hanging out. If it's not sliding, I'm bored. I'm not going for ultimate time at DE's. I'm having a blast and learning at the same time. I think being comfortable w/ a neutral to loose car helped me in Spec Miata. Plus I don't post videos of the dull laps where everything is neat & tidy.
I'm still going to do the oil/egg mixer test. I'll post results here.
Re: handling - I love driving w/ the tail hanging out. If it's not sliding, I'm bored. I'm not going for ultimate time at DE's. I'm having a blast and learning at the same time. I think being comfortable w/ a neutral to loose car helped me in Spec Miata. Plus I don't post videos of the dull laps where everything is neat & tidy.
I'm still going to do the oil/egg mixer test. I'll post results here.
06-04-2008, 11:34 PM
#49
Administrator - "Tyson"
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To add more fun data to the bowl, I know a couple ZO6 drivers who run low 2:30's at Road America (these are street cars, not stripped race cars) who use off the shelf Mobil 1.
06-04-2008, 11:42 PM
#50
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Thread Starter
no doubt that many cars and race cars can use mobil one and survive the thermal break down. I think our engines , with that funky oiling issue, needs something better. I think cup cars could use Wesson oil and survive for 50 race hours!
mk
mk
06-05-2008, 12:13 AM
#51
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06-05-2008, 04:55 AM
#52
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what kills stk 928 engine is high speed banking or high speed sweeping turn (1/4 miles plus in distance and 120 plus MPH) and none DOT tires. Give me Mark's car for few hours at Willow Spring Race way or Cal Speed way I am sure it will blow!
Joseph Fan
Joseph Fan
06-05-2008, 11:55 AM
#54
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I think turn 2 at thunderhill puts max G loading for the same amount of time as turn 8 -9 at Willows. I wonder if there is any difference. 1.5 Gs at 70- 80mph or 1.5Gs at 100mph. should have the same effect, right? the engine doesnt now how fast you are going, it only knows "G's" and duration.
Willow springs during turn 8 is 5-6 seconds , a quick break and turn 9 for about 3-4 seconds.
The carocell at Sears is 70-80mph for 5 seconds and so is turn 2 at Thunderhilll.
Plus, we did run the carrocel at Road America for the weekend.
I still think its the foaming thing.
mk
Willow springs during turn 8 is 5-6 seconds , a quick break and turn 9 for about 3-4 seconds.
The carocell at Sears is 70-80mph for 5 seconds and so is turn 2 at Thunderhilll.
Plus, we did run the carrocel at Road America for the weekend.
I still think its the foaming thing.
mk
Last edited by mark kibort; 06-05-2008 at 12:36 PM.
06-06-2008, 05:53 AM
#55
Track Day
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Hi Mark! Thanks for sharing your knowledge! And I am amazed that you don't seem to be put off by some of the comments. The world is full of "experts", and the oil-discussions usually pull them out of their closets...As long as people don't realize that there's more to an oil than just the viscosity rating (and the text on the back of the bottle), well...
Your practical knowledge is far more valuable than all the "theoretical" discussions I've read.
Keep on informing us!
Your practical knowledge is far more valuable than all the "theoretical" discussions I've read.
Keep on informing us!
